Rogerson Kratos Huge Repair Cost – Again!
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Here is some more good news regarding GPS approaches with the Roadrunners.
1. SUBJECT
Astronautics Corporation of America
SERVICE LETTER
RNAV (GPS) operations using the Astronautics Electronic Flight Instrument (EFI) “RoadRunner”, Model AFI4700.
2. BACKGROUND
This Service Letter is issued to all operators and maintainers of the RoadRunner EFI on the requirements to obtain operational approval to perform U.S. Area Navigation (RNAV) operations using Global Positioning System (GPS) equipment for Lateral Navigation (LNAV) and Vertical Navigation (VNAV) in En Route, Oceanic, Terminal, Localizer Performance with Vertical Guidance (LPV), and Localizer Performance without Vertical Guidance (LP) procedures.
Astronautics has received inquiries on the ability to perform RNAV (GPS) operations when replacing an aircrafts’ exiting Attitude Direction Indicator (ADI) and Horizontal Situation Indicator (HSI) with the RoadRunner EFI. This Service Letter will provide the recommended procedures to obtain operational approval with the Federal Aviation Administration (FAA). For operators and maintainers operating in Europe or other nations, consult your local Civil Aviation Authority (CAA) for guidance.
3. REFERENCE DOCUMENTS
The FAA Advisory Circulars (AC) listed below are not the only means of obtaining operational approval of aircraft containing GPS receivers with Wide Area Augmentation System (WAAS) performance.
FAA AC 90-105
FAA AC 90-107 PLG12863
“Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System and in Oceanic and Remote Continental Airspace”
“Guidance for localizer performance with Vertical Guidance and Localizer” Roadrunner Pilot’s Guide
4. PART NUMBER AND APPLICABILITY
277060-[ ] all revisions.
5. ACTION REQUIRED
The RoadRunner EFI is intended to be the indicator for a complete GPS/WAAS system. The RoadRunner can display RNAV (GPS) navigation deviations and annunciations required for LNAV, LNAV/VNAV, LPV, and LP procedures for Oceanic, En Route, Terminal, and Approach phases of flight within the Pilots’ primary field of view. The RoadRunner relies on a properly installed and approved FAA Technical Standard Order (TSO) -C146(b or higher), Class 3 or Class 4 GPS/WAAS receiver with an FMS to provide the data required to be displayed.
Original Issue: SL No. 276800-34-002 Page 1 of 2
Astronautics Corporation of America
SERVICE LETTER
Operators must contact their local FAA Flight Standards District Officer (FSDO) to obtain the operational approval of the system. The FSDO may refer the operator to an authorized designee as required.
The following information is required to obtain approval:
• Verification that the TSO-C146 GPS/WAAS system has been installed and tested in accordance with the equipment manufacturers manuals.
• Verification that the Aircraft Flight Manual Supplement (AFMS) or Rotorcraft Flight Manual Supplement (RFMS) for the GPS/WAAS system includes information on all IFR and WAAS procedures with any limitations.
• Verification of a Minimum Equipment List (MEL) to address WAAS flight operations.
• Verification that the operator has a training program for the use of the GPS/WAAS system,
that the training program is documented, and that there is refresher training conducted.
Installation of the RoadRunner EFI in accordance with an approved FAA or EASA Supplemental Type Certificate (STC) will include a ground functional test plan, flight functional test plan, and an FAA/EASA approved AFMS/RFMS to assist in meeting the installation and documentation requirements for operational approval. The operator must include the GPS/WAAS STC or installation approval documents to complete the requirements.
The operator must develop an MEL specific for their aircraft to identify the minimum required functional equipment to dispatch and continue flight operations. An MEL is not part of a RoadRunner STC and must reflect the equipment installed in the aircraft.
The operator must develop a training program for the use of the entire GPS/WAAS system to include operation of the GPS/WAAS receiver, FMS, and RoadRunner EFI.
An OpSpec, MSpec, or LOA will be issued to the operator once all of the requirements have been met. Operators wishing to use the RoadRunner EFI with an approved TSO-C146 GPS/WAAS FMS should review FAA AC 90-107 (latest revision) to obtain additional details not covered in the Service Letter.
Original Issue: SL No. 276800-34-002 Page 2 of 2
1. SUBJECT
Astronautics Corporation of America
SERVICE LETTER
RNAV (GPS) operations using the Astronautics Electronic Flight Instrument (EFI) “RoadRunner”, Model AFI4700.
2. BACKGROUND
This Service Letter is issued to all operators and maintainers of the RoadRunner EFI on the requirements to obtain operational approval to perform U.S. Area Navigation (RNAV) operations using Global Positioning System (GPS) equipment for Lateral Navigation (LNAV) and Vertical Navigation (VNAV) in En Route, Oceanic, Terminal, Localizer Performance with Vertical Guidance (LPV), and Localizer Performance without Vertical Guidance (LP) procedures.
Astronautics has received inquiries on the ability to perform RNAV (GPS) operations when replacing an aircrafts’ exiting Attitude Direction Indicator (ADI) and Horizontal Situation Indicator (HSI) with the RoadRunner EFI. This Service Letter will provide the recommended procedures to obtain operational approval with the Federal Aviation Administration (FAA). For operators and maintainers operating in Europe or other nations, consult your local Civil Aviation Authority (CAA) for guidance.
3. REFERENCE DOCUMENTS
The FAA Advisory Circulars (AC) listed below are not the only means of obtaining operational approval of aircraft containing GPS receivers with Wide Area Augmentation System (WAAS) performance.
FAA AC 90-105
FAA AC 90-107 PLG12863
“Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System and in Oceanic and Remote Continental Airspace”
“Guidance for localizer performance with Vertical Guidance and Localizer” Roadrunner Pilot’s Guide
4. PART NUMBER AND APPLICABILITY
277060-[ ] all revisions.
5. ACTION REQUIRED
The RoadRunner EFI is intended to be the indicator for a complete GPS/WAAS system. The RoadRunner can display RNAV (GPS) navigation deviations and annunciations required for LNAV, LNAV/VNAV, LPV, and LP procedures for Oceanic, En Route, Terminal, and Approach phases of flight within the Pilots’ primary field of view. The RoadRunner relies on a properly installed and approved FAA Technical Standard Order (TSO) -C146(b or higher), Class 3 or Class 4 GPS/WAAS receiver with an FMS to provide the data required to be displayed.
Original Issue: SL No. 276800-34-002 Page 1 of 2
Astronautics Corporation of America
SERVICE LETTER
Operators must contact their local FAA Flight Standards District Officer (FSDO) to obtain the operational approval of the system. The FSDO may refer the operator to an authorized designee as required.
The following information is required to obtain approval:
• Verification that the TSO-C146 GPS/WAAS system has been installed and tested in accordance with the equipment manufacturers manuals.
• Verification that the Aircraft Flight Manual Supplement (AFMS) or Rotorcraft Flight Manual Supplement (RFMS) for the GPS/WAAS system includes information on all IFR and WAAS procedures with any limitations.
• Verification of a Minimum Equipment List (MEL) to address WAAS flight operations.
• Verification that the operator has a training program for the use of the GPS/WAAS system,
that the training program is documented, and that there is refresher training conducted.
Installation of the RoadRunner EFI in accordance with an approved FAA or EASA Supplemental Type Certificate (STC) will include a ground functional test plan, flight functional test plan, and an FAA/EASA approved AFMS/RFMS to assist in meeting the installation and documentation requirements for operational approval. The operator must include the GPS/WAAS STC or installation approval documents to complete the requirements.
The operator must develop an MEL specific for their aircraft to identify the minimum required functional equipment to dispatch and continue flight operations. An MEL is not part of a RoadRunner STC and must reflect the equipment installed in the aircraft.
The operator must develop a training program for the use of the entire GPS/WAAS system to include operation of the GPS/WAAS receiver, FMS, and RoadRunner EFI.
An OpSpec, MSpec, or LOA will be issued to the operator once all of the requirements have been met. Operators wishing to use the RoadRunner EFI with an approved TSO-C146 GPS/WAAS FMS should review FAA AC 90-107 (latest revision) to obtain additional details not covered in the Service Letter.
Original Issue: SL No. 276800-34-002 Page 2 of 2
